About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Aluminum Industry Emissions Measurement, Reporting & Reduction
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Presentation Title |
Heavy Metal Emissions through Dust from Aluminium Electrolysis |
Author(s) |
Fride Muller, Thor Anders Aarhaug, Gabriella M. Tranell |
On-Site Speaker (Planned) |
Gabriella M. Tranell |
Abstract Scope |
Heavy metals in airborne particulate matter (PM), is considered a health and environmental concern. A better understanding of the formation and characteristics of the dust is necessary to improve monitoring and control measures of these emissions. Both settled and collected airborne dust from Norwegian smelters were characterised by dry laser diffraction, SEM/TEM, XRD and ICP-MS.
PM emissions (PM1.0, PM2.5, PM4.0 and PM10) were measured by optical PM sensors, mapping variations in fugitive emissions in different potroom areas.
Heavy metals were often found as inclusions or on the surface of larger carbon particles in the dust. Nickel and iron were found as phosphorous or sulfur compounds. The particle size for settled and airborne dust were mainly in the PM10+ range, while the average particle size for particles measured by the sensor system were around 0.6 µm at roof and floor level. Anode change gave rise to higher emissions than other operations.
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Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Environmental Effects, Other |